stroke: Add support for address range definitions of in-memory pools

man/ipsec.conf.5.in

@@ -853,13 +853,15 @@ an address of the given address family will be requested explicitly.
 If an IP address is configured, it will be requested from the responder,
 which is free to respond with a different address.
 .TP
-.BR rightsourceip " = %config | <network>/<netmask> | %poolname"
+.BR rightsourceip " = %config | <network>/<netmask> | <from>-<to> | %poolname"
 Comma separated list of internal source IPs to use in a tunnel for the remote
 peer. If the value is
 .B %config
 on the responder side, the initiator must propose an address which is then
 echoed back. Also supported are address pools expressed as
 \fInetwork\fB/\fInetmask\fR
+and
+\fIfrom\fB-\fIto\fR
 or the use of an external IP address pool using %\fIpoolname\fR,
 where \fIpoolname\fR is the name of the IP address pool used for the lookup.
 .TP

src/libcharon/plugins/stroke/stroke_config.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Tobias Brunner
+ * Copyright (C) 2012-2014 Tobias Brunner
  * Copyright (C) 2008 Martin Willi
  * Hochschule fuer Technik Rapperswil
  *
@@ -666,6 +666,24 @@ static auth_cfg_t *build_auth_cfg(private_stroke_config_t *this,
 	return cfg;
 }
 
+/**
+ * build a mem_pool_t from an address range
+ */
+static mem_pool_t *create_pool_range(char *str)
+{
+	mem_pool_t *pool;
+	host_t *from, *to;
+
+	if (!host_create_from_range(str, &from, &to))
+	{
+		return NULL;
+	}
+	pool = mem_pool_create_range(str, from, to);
+	from->destroy(from);
+	to->destroy(to);
+	return pool;
+}
+
 /**
  * build a peer_cfg from a stroke msg
  */
@@ -789,17 +807,25 @@ static peer_cfg_t *build_peer_cfg(private_stroke_config_t *this,
 			}
 			else
 			{
-				/* in-memory pool, named using CIDR notation */
+				/* in-memory pool, using range or CIDR notation */
+				mem_pool_t *pool;
 				host_t *base;
 				int bits;
 
-				base = host_create_from_subnet(token, &bits);
-				if (base)
+				pool = create_pool_range(token);
+				if (!pool)
 				{
-					this->attributes->add_pool(this->attributes,
-										mem_pool_create(token, base, bits));
+					base = host_create_from_subnet(token, &bits);
+					if (base)
+					{
+						pool = mem_pool_create(token, base, bits);
+						base->destroy(base);
+					}
+				}
+				if (pool)
+				{
+					this->attributes->add_pool(this->attributes, pool);
 					peer_cfg->add_pool(peer_cfg, token);
-					base->destroy(base);
 				}
 				else
 				{